大家好...第一次在这边问问题... 现在作假设检定有碰到一个问题 就是在拒绝域的部份 比如说题目给定α=0.01 (大样本) 教科书上的步骤到这一步是直接写说 RR={|Z|>zα/2} or RR={Z<-zα/2 or Z>zα/2} 可是手上的题目详解却是直接用z 0.01 翻书也没有看到为何不用 /2 麻烦解惑 >"< 补上题目 A machine in a factory must be repaired if it produces more than 10% defectives among the large lot of items it produces in a day. A random sample of 100 items from the day's production contains 15 defectives, and the supervisor says that the machine must be repaired. Does the sample evidence support his decision? Use a test with level 0.01 ※ 编辑: warsp 来自: 211.74.229.125 (02/21 17:15)